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Gravitational wave microlensing by dressed primordial black holes

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arxiv 2303.17601 v2 pith:NBU7Q7ER submitted 2023-03-30 astro-ph.CO astro-ph.HE

Gravitational wave microlensing by dressed primordial black holes

classification astro-ph.CO astro-ph.HE
keywords pbhsblackdarkholesmatterdressedfractiongravitational
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study gravitational wave microlensing by primordial black holes (PBHs), accounting for the effect of a particle dark matter minihalo surrounding them. Such minihaloes are expected when PBHs make up only a fraction of all dark matter. We find that the LIGO-Virgo detections imply a $1\sigma$ bound on the abundance of PBHs heavier than $50 M_{\odot}$. The next generation observatories can potentially probe PBHs as light as $0.01 M_\odot$ and down to $2\times10^{-4}$ fraction of all dark matter. We also show that these detectors can distinguish between dressed and naked PBHs, providing a novel way to study the distribution of particle dark matter around black holes and potentially shed light on the origins of black holes.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Wave-optics gravitational wave lensing in modified gravity

    gr-qc 2026-05 unverdicted novelty 8.0

    In a curvature-coupled propagation framework for modified gravity, gravitational-wave lensing in wave optics shows persistent infrared interactions that prevent the amplification factor from approaching unity at zero ...

  2. Gravitational-wave lensing beyond rays: a disordered-system approach

    astro-ph.CO 2026-04 unverdicted novelty 7.0

    A quenched-disorder approach with Schwinger-Keldysh path integrals produces an averaged density matrix for gravitational waves that separates phase-suppressing exponential terms from oscillatory corrections to coheren...

  3. Constraints on Primordial Black Hole Dressed by Dark Matter Halo from Microlensing Effect of Fast Radio Bursts

    astro-ph.CO 2026-07 conditional novelty 5.0

    A new conversion formula turns monochromatic bare-PBH microlensing bounds into extended-mass dressed-PBH bounds, and a 10^5-FRB forecast places f_PBH near 10^-4.